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Sep 20, 2008 | 04:53 PM

fuzzyjk

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From: Cape Cod

Need springs

What is the most cost effective LS1 valve springs that will handle 609 lift "safely"?

Sep 20, 2008 | 05:13 PM

conan

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Don't skimp on some thing like valve springs. .609 is some prety big lift.
https://www.patriot-performance.com/...&cat=51&page=1

https://ls1tech.com/forums/generation-iii-internal-engine/988306-valve-float.html

Sep 20, 2008 | 05:53 PM

2000PewterZ28

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Call TSP and get the PRC spring kit.

Sep 20, 2008 | 06:35 PM

dadem0n

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Depends.... are you only talking about a 224 XFI lobe?

Sep 20, 2008 | 07:24 PM

Vndcatr

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Is PRC the patriot springs also? ..

Sep 20, 2008 | 09:11 PM

99blancoSS

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PAC 1518.... the beehive design offers superior valve control, some people dont like single springs as they are paranoid about breakage. PAC say it's not an issue with their springs. I have 1518's for $265 delivered

Sep 20, 2008 | 09:25 PM

Vndcatr

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Do they guarantee the spring wont fail for a .600 + lift ??

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Sep 21, 2008 | 07:29 AM

fuzzyjk

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The cam specs are: 226/232 604/609 113+2 LSA

I take it 918's are out?

Sep 21, 2008 | 08:57 AM

#10

99blancoSS

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Yes 918's are out. You need a spring good to .650 lift

Sep 21, 2008 | 10:58 AM

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Vndcatr

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hmmmm....

Sep 21, 2008 | 11:27 AM

#12

99blancoSS

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PAC also has all the double and triple springs in the world as well but when I spoke to them and specifically asked what would be best they said the 1518 over the 921 double spring. I spoke at length with them about it. You should call them and ask for yourselves
866-799-9417. I had posted my conversation with them and the specific questions I asked but I cant seem to find it. Anyway I posted the main points in this thread from the conversation. Breakage they said is not an issue.